Pole and shaft.



No. 723,492. PATENTED MAR. 24, 1903.

G. A. SGHENGK.

POLE AND SHAFT.

APPLICATION FILED JAN. 12-. 1903,

H0 MODEL.

WITNESSES: I VENTQR.

Z I 24 TTORNE'X,

UNITE ST TES PATENT O FICE.

GEORGE AUSTIN SCHENCK, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO HOOKER85 00., OF SAN FRANCISCO, CALIFORNIA, A FIRM.

POLE AND SHAFT.

SPECIFICATION forming part of Letters Patent No. 723,492, dated March24, 1903.

Application filed January 12, 1903. Serial No. 138,644- (No model.)

To aZZ whom it may concern:

Be it known that I, GEORGE AUSTIN SCHENCK, a citizen of the UnitedStates, residing in the city and county of San Francisco, State ofCalifornia, have invented an Improvement in Poles and Shafts; and Ihereby declare the following to be a full, clear, and exact descriptionof the same.

My invention relates to improvements in metal connections for shafts andcross-bars. Its object is to provide a cheap, rigid, and durableconnection and one which will permit shafts to be knocked down toeconomize space in shipping. l

It consists of the parts and the construction and combination of partsas hereinafter more fully described, having reference to theaccompanying drawings, in which- Figure l is a view of one form of mydevice. Fig. 2 is an end view of the same. Fig. 3 shows a modificationof my device in position upon the shaft and crossbar. Fig. 4 is an endview of same. Fig. 5 is a top view of a modified form. Fig. 6 is an endview ofsame.

A represents an ordinary shaft or thill, and B the usual cross-bar. 2 isa casting connecting these parts, and my invention resides in itspeculiarities of construction. 7

In Fig. 1 I have have shown one form of my device wherein the castingcomprises a web portion adapted to fit a slot in the end of thecross-bar and to be bolted thereto and having lateral lug portions 3 tobear upon the shaft. Integral with the casting are the dowel projections4 and the bolt 5, by which the cross-bar may be rigidly connected to theshaft. The dowels, which may be round or flat, as shown in Figs. 1 to 3,seat in mortises in the shaft and prevent the parts twisting. The bolt5, it will be noted, is made with a thickened base portion 5, affordinga reinforcement where most needed and obviating the likelihood 'of abolt being twisted off when undue strain is brought on the parts. Asmall bolt of uniform diameter would be impracticable, for it would beliable to break at the point where it joins the casting. Too large abolt, on the other hand, is undesirable, because it weakens the shaftneedlessly. With this bolt a small hole sufflcient to admit the smallerthreaded portion of the bolt is bored in the shaft, and the cross-barend of the holeso bored is enlarged to receive the shoulder portion 5.on the bolt, the cross-bar and shaft may be drawn together tight to forman extremely rigid connection. The further advantage of this casting isits cheapness.

If desired, the casting may be modified whereby the not will be madeintegral with it, as in Fig. 3 and indicated at 6, in which case apolygonal-headed bolt is used, giving a neat compact appearance when thecrossbar is securedto the shaft. The same figure, 3, shows theemployment of flattened dowels 4 with transversely-elongatedperforations to insure registry when boring the holes in the shaft afterthe dowels are inserted in their m'ortises. Bolts are then passedthrough the shaft, dowels, and shaft-iron to give an attachment inaddition to the bolt 5 or its equivalent.

Where a casting of greater strength is needed than either of theforegoing, I employ a form'(shown in Fig. 5) in which the perforatedflattened lugs 4} and nut6 are retained, but in which the web portion isreduced in size, while in addition thereto are two parallel separatedplates having each a portion 7, adapted to embrace and be bolted to thetop and bottom of the cross-bar, and portion 8 8 continuous with parts 7and forming respective top and bottom supports for a shaft. The platesare transversely connected by a diaphragm portion 10, of which the lugs3 are extensions. The web, lugs, dowels, nut, and parts 7 and 8 8 areall cast in one integral structure. The parts 8 8 are perforatedcoincidently with the perforations in the dowels to receive bolts. Thebottom plate 8 is offset from its corresponding part 7 and is intendedto be countersunk in the shaft, so that when the shaft-iron is bolted onthe latter will rest on the bottom plate 8 flush with the surface of theshaft and the said corresponding part 7.

It is obvious that I may substitute in the last-described structure theintegral bolt feature of Fig. 1 for the nut 6 shown, and I wish to beable to group the various elements When a nut is screwed and formsthereof specified in such manner as may appear best suited in anyparticular case. v

'Having thus described my invention, what I claim, and desire to secureby Letters Patent, is p 1. A cross-bar and shaft connection, comprisinga casting adapted to be secured to a cross-bar and having dowelprojections and shaft-locking means integral with it and lyingsubstantially parallel with the dowel projections and extending throughthe shaft, sub stantially as described.

2. The combination with the cross-bar and shafts, of a casting securedto the cross-bar and having lateral lugs bearing upon the shaft, dowelsintegral with said lugs fitting mortises in the shaft and a boltintegral with the casting extending through the shaft and threaded toreceive a nut.

3. The combination with the cross-bar and intermediate of said plates,and a bolt intermediate of and parallel with the dowel and extendingthrough the cross-bar, said dowels and plates having coincidentperforations.

In witness whereof I have hereunto set my hand.

GEORGE AUSTIN SCHENOK. Witnesses:

S. H. NOURSE, D. B. RICHARDS.

